Design and Implementation of a New Queue Scheduling Scheme in DiffServ Networks
In this paper,based on analyzing the two existing queue scheduling algorithms WRR and DWRR,an improved scheduling algorithm,called DVVRR+,is presented,which is the resolution for the fairness of bandwidth allocation of the WRR algorithm.The ns-2 simulations show that the improved scheduling algorithm not only offers the service of the minimum guaranteed bandwidth but also implements the fair allocation of residual bandwidth.Furthermore,synthesizing the PHB performance requirements of EF,AF and BE in DiffServ,a new two-level scheduling scheme for multiservice networks,called PRI/DWRR+,is designed based on the DWRR+ algorithm.Eventually,in the simulation test of the new scheduling scheme,the PHB parameters are configured according to various service of internet.The simulation results indicate that the new scheduling scheme PRI/DWRR+ can implement Differentiated Services for the business flow with different QOS requirements,so PR1/DWRR+ is completely suitable for DiffServ networks.
Keywords-Differentiated services Queue scheduling DWRR+ PRI/DWRR+ NS-2
Miaoyan Li Bo Song
Software College Shenyang Normal University Shenyang 110034,China
国际会议
The 2nd IEEE International Conference on Advanced Computer Control(第二届先进计算机控制国际会议 ICACC 2010)
沈阳
英文
117-122
2010-03-27（万方平台首次上网日期，不代表论文的发表时间）